K&N Harley-Davidson® RK Series Air Intake Systems

K&N's RK Series air intake systems have been developed to get more horsepower from your Harley-Davidson® motorcycle. Built around the legendary K&N high-flow air filter, the RK series assembly includes an innovative powder coated, billet aluminum back plate that eliminates external breathers and features a built-in, dyno tuned velocity stack. The result is a significant airflow increase to the engine without sacrificing filtration. This RK series assembly retains a factory appearance by utilizing the stock air cleaner cover.

Some of the more popular RK series air intake systems for Harley-Davidson®:

*Some air intakes are not legal for highway use in California or other states adopting California emission standards. Click the part number for up-to-date information on emissions legality for specific parts on specific vehicles. For a list of other CARB adoption states visit the Legal in Most States page.